GM's Auto & Other reportable operating segment consists of: GM's four automotive regions: GM North America (GMNA), GM Europe (GME), GM Latin America/Africa/Mid-East (GMLAAM), and GM Asia Pacific (GMAP), which constitute GM Automotive (GMA); and Other, which includes the design, manufacturing and marketing of locomotives, the elimination of intersegment transactions, certain non-segment specific revenues and expenditures, including legacy costs related to postretirement benefits for certain Delphi and other retirees, and certain corporate activities.

GMNA designs, manufactures, and/or markets vehicles primarily in North America under the following nameplates: Chevrolet, Pontiac, GMC, Oldsmobile, Buick, Cadillac, Saturn, and HUMMER.

GME, GMLAAM, and GMAP primarily meet the demands of customers outside North America with vehicles designed, manufactured, and/or marketed under the following nameplates: Opel, Vauxhall, Holden, Saab, Buick, Chevrolet, GMC, and Cadillac. As of December 31, 2004, GM also has equity ownership directly or indirectly through various regional subsidiaries in New United Motor Manufacturing, Inc. (NUMMI), Fiat Auto Holdings (FAH), Fuji Heavy Industries Ltd., Suzuki Motor Corporation (Suzuki), Isuzu Motors Ltd., Shanghai General Motors Co., Ltd. (SGM), SAIC-GM-Wuling Automobile Company Ltd., CAMI Automotive Inc. (CAMI), and GM Daewoo Auto & Technology Company (GM-DAT). These investees design, manufacture and market vehicles under the following nameplates: Pontiac, Fiat, Lancia, Alfa Romeo, Subaru, Suzuki, Isuzu, Buick, Wuling, Daewoo, and Chevrolet. On February 13, 2005, GM entered into certain agreements with Fiat S.p.A. (see Note 25 to the Consolidated Financial Staatements) as a result of which GM will no longer hold an interest in FAH, and the nameplates of Fiat, Lancia, and Alfa Romeo will no longer be identified herein.